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Michael Bouschen commented on JDO-651: -------------------------------------- Interesting idea! Questions: With tx.commit being a no-op, how do the changes get synchronized to the datastore? On each change of the Java instance? Does the user need to call flush? Or is flush a no-op, too? When supporting persistent-clean ->hollow on commit, how about doing a persistent-dirty -> hollow on rollback? > Modify specification to address NoSQL datastores > ------------------------------------------------ > > Key: JDO-651 > URL: https://issues.apache.org/jira/browse/JDO-651 > Project: JDO > Issue Type: New Feature > Components: api, specification, tck > Affects Versions: JDO 3 (3.0) > Reporter: Matthew T. Adams > Assignee: Matthew T. Adams > Labels: jdo, nosql, profile, specification > Fix For: JDO 3 maintenance release 2 (3.2) > > > There is increasing interest in NoSQL datastores (Google BigTable, Apache > HBase, VMWare Redis, etc), which not only do not support SQL, but also do not > necessarily provide support for traditional consistency or queriability > features or guarantees, instead offering features like eventual consistency, > key-value storage mechanisms, etc. > This request is to modify the JDO specification (and TCK & RI) so that it > relaxes certain portions of the specification, perhaps in the form of > profiles similar to JavaEE 6 profiles, to allow datastores that may not > support queries in general, do not support the ACID requirements, or that > support key-value-based storage mechanisms to be JDO-compliant. Additions to > the specification may also be needed in order to directly address NoSQL-type > datastores, in a manner similar to its treatment of relational persistence > mechanisms. > Additionally, this request would serve to better support persistence on micro > platforms where consistency, queriability, etc, may not be supported. -- This message was sent by Atlassian JIRA (v6.2#6252)